Jack for shoes.



0.1 HAiG & S. A. LEWIS.

JACK FOR SHOES= APPLECATIOH FILED :umzz. i916.

Patented. July 10, 1917'.

Atty s.

w om mm vH Y T a T I 0 Samuel A. Lewis by M3mLM/az NIT TATS FFTE.

OTTAR T. HAIG, OF BEACHMONT, AND SAMUEL A. LEWIS, OF SOUTH BRAINTREE,MASSACHUSETTS.

JACK FOB SHOES.

Application filed June 2, 1916.

To all whom it may concern:

Be it known that we, OTTAR T. HAIG and SAMUEL A. LEWIS, citizens of theUnited States, and residents of Beachmont, county of Suffolk, and SouthBraintree, county of Norfolk, State of Massachusetts, have invented anImprovement in Jacks for Shoes, of which the following description, inconnection with the accompanying drawing, is a specification, likecharacters on the drawing representing like parts.

This invention relates to improvements in jacks for supporting lasts forboots and shoes and the object thereof is to provide a relatively simpleand inexpensive device which will support the last with the shoethereupon during ironing or other finishing operations.

Another object of the invention is to provide a jack of the classdescribed with means for supporting smoothly the upper of a high topshoe.

Another object of the invention is to provide a novel means for securingthe last to the end of the jack.

Other objects and features of the invention will more fully appear fromthe following description and accompanying drawings and will be pointedout in the annexed claims.

In the drawings:

Figure 1 is a side elevation of a preferred embodiment of my inventionshowing the support for the upper in section,

Fig. 2 is a vertical sectional view of the end of the jack post showingthe expansible jaws thereof expanded within the socket of a last, with ascrew for expanding the same,

Fig. 3 is a vertical sectional view on lines 3-3 Fig. 1, showing thepawl and ratchet mechanism for actuating the screw for expanding saidjaws,

Fig. 4 is an enlarged vertical sectional view of the upper support andjack on lines 1, 4, Fig. 1,

Fig. 5 is a section on lines 5, 5, Fig. 1.

The apparatus employed in shoe factories and shops for supporting a shoeduring the ironing and dressing operations comprises a form in the shapeof a last adapted to stretch the shoe and to support it smoothly whilethe upper is being treated, such jacks being ordinarily secured to afixed support and adapted to be rotated thereon in order Specificationof Letters Patent.

Patented July 111 191%.

Serial No. 101,386.

to permit access to the different portions of the shoe.

The preferred embodiment of the invention disclosed herein comprises astand 1 adapted to be atlixed to a suitable table preferably providedwith drawers and closed receptacles for the liquid used in the treatmentof the shoe, said stand having upwardly extending ears forming hearingsor supports for the shaft 2 on which are pivotally mounted two hollowarms 3, 3 forming sockets for jack posts & having means at their outerends to engage sockets in the last.

In the treatment of shoes it is desirable that means may be providedwhereby one shoe will be drying while another shoe is being treated,means are therefore provided whereby one of the jacks will be moved intohorizontal position to permit drying of the shoe placed upon it whilethe other jack is in a substantially vertical position while beingoperated upon. In order to facilitate the work means are providedwhereby when one jack is moved from vertical position to horizontalposition the other jack will be moved in the opposite direction.

This is accomplished in the present embodiment of the invention byproviding the arms 3 and 3 respectively with beveled gears 5 and 5 bothof said gears engaging a pinion 6 rotatably mounted upon a suitable studextending upwardly from said stand.

It is desirable that the jack be supported resiliently when in itshorizontal or working position and in the present embodiment such meanscomprises a plunger 7 slidably mounted in a boss 8 on the stand 1, theplunger 7 being supported by a spring 9 to engage the jack when thelatter is in horizontal position.

The jack post 4 is rotatably mounted within the arm 3 and is securedfrom longitudinal movement therein by a set screw 10 extending throughthe wall of the arm into an annular groove 11 in the jack post. A setscrew 12 having a winged head may be provided for locking the j ack postagainst rotation in any desired direction.

The end of each jack post is provided with yieldable jaws 13 adapted toenter the socket in a last. These jaws may conveniently be formed bysplitting a cylindrical extension of a sleeve 14 adapted to fitrthereduced end of the jack post 4 and secured thereto by set screws 15. Theset screws 15 may be provided with cylindrical portions 16' for purposeshereinafter to'be described.

The jaws 13 preferably are provided with.

internal screw threads 17 to cooperate with corresponding threads 18upon the tapered end of a shaft 19 which is rotatably mounted in abearing extending longitudinally of the jack post.

Suitable means may be provided for rotating the shaft 19. As illustratedherein a toothed member or gear 20 keyed to said shaft is located in arecess in the jack post 4 adjacent to the end of the arm 3. A handle 23having a cylindrical portion 24 is rotatably mounted upon the jack postand preferably abuts the end of the arm 3, and a pin slidably mounted inthe lever 23 is held in engagement with the gear by suitable resilientmeans so that as the lever is oscillated the gear 20 and shaft 19 may berotated to cause the actuation of the expanding screw 18. v 1

In order to permit sufficient oscillation of the lever a portion of thejack post is recessed to provide a slot 25 within which the pawl 22 maybe oscillated. The pawl 22 is forced into engagement with the toothedmember by a spring 26 abutting at one end against the end of the pawland at the other against the base of a screw 27 seated in the upper endof the lever. A preferred means for removing the pawl from engagementwith the toothed member consists of a lever 28 pivoted upon a stud 29extending transversely through the handle, the lever 28 extending at oneend through a slot 30 in the pawl and at the other end being engaged bya plunger 31 slidably mounted in the head of the lever and extendingabove the end of the same, said plunger 31 being limited in its movementby a pin 32 extending through a slot 33 therein.

In the operation of the device the jack is brought into horizontalposition and the socket in the last thrust over the jaws 13 at the endof the jack. The lever 23 is then oscillated, the pawl carried by saidlever engaging and rotating the toothed member 20 and with it the shaft19 thereby advancing the screw 18 and separating the jaws 13 until theyengage firmly the walls of the socket in the last. In order that theshaft 19 may be rotated readily in either direction to advance orretract the screw the teeth upon the toothed member are made symmetricaland the pawl is raised from engagement with said teeth by pressure ofthe thumb of the operator upon the end of the plunger 31.

By the construction above described an easily operable means is providedfor securing the last to the jack which means will fit the socket in anylast andfsecurelthe same 'means for expanding said members sufiicientlyto maintain the upper in smooth condition.

In the preferred embodiment of the in: vention disclosed herein saidmeans'coinprises two oppositely disposed curved members 35 and 36,having their adjacent {edges telescopically arranged, said members beingconnected by pin and slot connections The retaining screws 15 forthe jawmembers may conveniently be utilized to secure the members 35, 36 tothelast, the shank 16 of said screws passing through slots 37 in themembers 35, 36. The shanks of the screws 15 are provided with thincrowned heads adapted to lie closely against the-outer'member 36 withoutmaking an objectionable bulge in the shoe upper. The Opposite ends'ofthe members 35 and 36 are secured togetherand to the jack by a pin 38extending through suitable slots 39 in said members, the pins 38 beingprovided with similarly thin crowned heads. The members 35, 36 may beexpanded by any suitable spring mechanism but preferably separatesprings are provided toexpand the endsso that the members 35, 36 willmore accurately conform to the shape of the upper. Aronvenient means foraccomplishing this purposefconsists of two U-shaped springs 40 and4l-coiled at their centers about studs42 extending oppositely from thesides of the jack .post 4,

ing the inner walls of the members 35 and 36.

By the construction above described the ankle portion of the form is ofsufficient flexibility to enablethe top of the shoe to be manipulatedquite as if it were upon the wearer. V a V In view of the flaring formofthe upper, means are provided to engage the topmost eyelets toikeep theupper stretched properly upon its support. This device conveniently maybe inthe form of a pair of hooks 43 or preferably a wire havinga'central coil with its ends extended to form hooks adapt= ed to engagethe eyelets, the coil of said. device being attached to one end of aspring 44 the opposite end of which .is secured :to a rod 45adjustablymounted in a boss 46 on a collar 47 attached to the jack post4. As illustrated herein the collar 47 may conveniently serve to securethe lever 23 upon the endofthe arm3. f U 7 It will be understood thatthe embodiment of the invention disclosed herein is illustrative and notrestrictive and that the inven- W 105 the free ends of the springsslidably engagtion may be incorporated in other forms within the meaningand scope of the following claims.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. A jack for lasts comprising a stand, a jack post carried therebyhaving yieldable jaws adapted to enter a socket in the last and meansincluding a screw for expanding said jaws into engagement with the wallsof said socket.

2. A jack for lasts comprising a stand, a jack post carried therebyhaving at its end internally threaded expansible jaws adapted to enter asocket in the last, a shaft rotatably mounted in said ack post having atapered screw engaging the threads of said expansible jaws and means forrotating said shaft to expand said jaws.

3. A jack for lasts comprising a stand, a jack post carried therebyhaving at its end internally threaded expansible jaws adapted to enter asocket in the last, a shaft rotatably mounted in said jack post having atapered screw engaging the threads of said expansible jaws, a toothedmember on the shaft of said screw and a lever having means detachablyengaging said member for rotating said shaft relatively to said jackpost to actuate said aws.

l. A jack for lasts comprising a stand, a jack post carried therebyhaving at its end internally threaded expansible aws adapted to enter asocket in the last, a shaft rotatably mounted in said jack post having atapered screw engaging the threads of said expansible jaws, an annulartoothed member fixed upon said shaft, a lever pivotally mounted uponsaid jack post, a pin slidably mounted in said lever engaging saidtoothed member and means for actuating said pin.

5. A jack for lasts comprising a stand, a jack post carried therebyhaving at its end internally threaded expansible jaws adapted to enter asocket in the last, a shaft rotatably mounted in said jack post having atapered screw engaging the threads of said expansible jaws, an annulartoothed member fixed upon said shaft, a lever pivotally mounted uponsaid jack post having a pin slidably mounted therein, a spring normallyholding said pin in engagement with said toothed member and meansoperable by a plunger extending through the head of said lever formoving said pin against the action of said spring.

6. A jack for shoe lasts comprising a stand, a jack post pivotallymounted thereupon, means for securing a last to said post Copies of thispatent may be obtained for five cents each, by addressing the and anexpansible form mounted upon said jack post to support the uppers of theshoe having resilient means normally tending to maintain said form inexpanded position.

7. A jack for shoe lasts comprising a stand, a jack post carriedthereby, means for securing a last to said jack post, an expansible formfor the upper mounted upon said jack post comprising suitably curvedmembers having their adjacent edges telescopically arranged andresilient means secured to said jack post for expanding said memberswhereby the upper of the shoe will be smoothly stretched.

8. A jack for shoe lasts comprising a stand, a jack post carriedthereby, means for securing a last to said jack post, an expansible formfor the upper mounted upon said jack post, comprising suitably curvedmembers having their'adjacent edges tele scopically arranged, saidmembers being provided adjacent their edges with slots to receive pinsextending laterally from the jack post and springs for independentlyexpanding the ends of said members.

9. A jack for shoe lasts comprising a stand, a jack post carriedthereby, means for securing a last to said jack post, an expansible formfor the upper mounted upon said jack post comprising suitably curvedmembers having their adjacent edges telescopically arranged, saidmembers being provided adjacent their edges with slots to receive pinsextending laterally from the jack post and U-shaped springs having theircentral portions coiled about studs upon the jack post and extending inopposite directions to engage frictionally the inner surface of theupper supporting members.

10. A device of the class described comprising a stand, a pair of jackposts pivotally mounted upon said stand and gearing having membersconnected to the respective jack posts for causing one of said jackposts to be raised when the other is lowered to working position.

11. A device of the class described comprising a stand, a pair of jackposts pivotally mounted upon said stand to move in vertical planes andprovided with beveled gears and a beveled gear rotatably mounted uponsaid stand engaging the beveled gears of said jack posts, said gearsbeing so arranged that when one of said jack posts is raised the otherwill be lowered to working position.

In testimony whereof, we have signed our names to this specification.

OTTAR T. HAIG. SAMUEL A. LEWVIS.

Commissioner of Patents.

Washington, D. G.

